External Phantom Powering

All micraphone combinations with the powering modules K 3 N and K 3 -U m~y be phantom powered with voltages between 12. . .48 V fram extern al power supplies. The ON/OFF-switch has to remain

in the position "ON" when the microphone is phantom powered since the switch otherwise also disconnects the audio output. The battery, in these cases, is not used up. If for any reason the external power supply fails the micraphone remains in operation if a battery has been inserted.

The principle of phantom powering for 48 V and the powering

module K 3 N is shown in figA. Pie ase note: The feed resistors have to have different values for other voltages than 48 V (e.g. 680 f! at 12 V supply).

i~l[

,"iW:J

l_..:o:

Phantom-powenng 48 V

 

alternatively

according 10DIN 45596

-

48V ,3.3 kf!

 

 

-.L

 

Fig.4

Low-cut Filter

The powering modules K 3 N and K 3-U have a switchable low- cut filter with three positions to attenuate interfering low frequencies. In position 1the filter is switched off and the two positions 11and 111

attenuate low frequency interferences corresponding with the , characteristics shown in fig. 5. This filter thus effectively reduces wind noise, foot steps and handling noise. When recording outdoors and also for close miking applications a suitable wind screen e. g.

MZW 30, MZW 201 and the MZW 415 resp. should be used in order to first of all reduce avoidable interferences. If the low-cut

filter is inserted it, of course, also attenuates part of the otherwise use~ble low-frequency range. Filters of that type should be always usetJ intelligently and with discretion. It is always recommended to check your recordings e.g. with headphones du ring the recording process in order to avoid disappointments.

10 dB

50

100

200

500

1000

Fig.5

Connector-wiring of the Modular Microphones

Wiring diagram N

Connector . . . 3 pin male connector to DIN 41524 . Pin connections

Pin

Audio

Externalpower

 

signal

to DIN 45596

1:

Audio (+)

Supply (+)

2:

Ground

Supply (-)

3:Audio (-) Supply (+)

Wiring

diagram -U

 

Connector . . . male

XLR-3

Pin connections

 

Pin

Audio

Extern al power

1:

signal

supply

Ground

Supply (-)

2:

Audio (+)

Supply (+)

3:Audio (-) Supply (+)

Connection cables

Sennheiser electronic offers a multitude of different connection cables for your modular micraphone system. The correct connection cable for your tape recorder may be easily found in our "Mikrofon- Anschluß-Fibel". To connect these micraphones to sound film

cameras a "Camera-Anschluß-Fibel" may be obtained through your dealer, the Sennheiser representation in your country or directly fram Sennheiser electronic, 3002 Wedemark 2. The booklets mentioned are free of charge.

Mounting the Microphones

The micraphones are supplied

~

with a quick release clamp

 

MZG 104-1. This clamp pro-

 

vides mounting of the micro-

 

phone on standard 3/8" tripod

 

threads. Two cable

 

stands are

 

available as optional accessor-

 

ies to which the clamp may be

 

alternatively mounted. The

 

MZT 104 is a light collapsable

 

plastic desk stand and the

 

MZT 105-1 is asolid metal

 

studio-type desk stand.

 

18

19